3rd Assault Amphibian Battalion (3rd AABn) is one of two active duty assault amphibian battalions in the

United States Marine Corps The United States Marine Corps (USMC), also referred to as the United States Marines, is the maritime land force service branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations through combi ...

. The battalion's primary weapon system is the

Amphibious Assault Vehicle The Assault Amphibious Vehicle (AAV)—official designation AAVP-7A1 (formerly known as Landing Vehicle, Tracked, Personnel-7 abbr. LVTP-7)—is a fully tracked amphibious landing vehicle manufactured by U.S. Combat Systems (previously by Unit ...

or AAV. The AAV is a 27.5-ton armored vehicle that carries up to 21 combat-loaded Marines and is armed with the UGWS (UpGunned Weapons Station), which mounts a .50 cal (12.7 mm) M2HB machine gun and a Mk-19 40 mm grenade launcher. The battalion is also equipped with the

Amphibious Combat Vehicle The Amphibious Combat Vehicle (ACV) is a program initiated by Marine Corps Systems Command to procure an amphibious assault vehicle for the United States Marine Corps to supplement and ultimately replace the aging Assault Amphibious Vehicle (AA ...

or ACV, a rather new variant to the USMC’s amphibious armament which will replace the AAV in years to come. The AAV ACV are the only armored vehicles in the U.S. inventory that are fully capable of operations both on land and in the ocean. The battalion is part of the

1st Marine Division The 1st Marine Division (1st MARDIV) is a Marine division of the United States Marine Corps headquartered at Marine Corps Base Camp Pendleton, California. It is the ground combat element of the I Marine Expeditionary Force (I MEF). It is th ...

and the

I Marine Expeditionary Force The I Marine Expeditionary Force ("I" pronounced "One") is a Marine Air Ground Task Force (MAGTF) of the United States Marine Corps primarily composed of the 1st Marine Division, 3rd Marine Aircraft Wing, and 1st Marine Logistics Group. It is ...

. The unit is based in

Camp Pendleton Marine Corps Base Camp Pendleton is the major West Coast base of the United States Marine Corps and is one of the largest Marine Corps bases in the United States. It is on the Southern California coast in San Diego County and is bordered by O ...

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...

Mission

Land the surface assault element of the landing force and their equipment in a single lift from assault shipping during amphibious operations to inland objectives; to conduct mechanized operations and related combat support in subsequent operations ashore. The specific Mission Essential Tasks List (METL) includes: * Preparing combat ready units for deployment and operations in support of the

* Preparing combat ready units for deployment and operations in support of Maritime Pre-Positioned Forces (MPF) to any AOR as directed. * Providing sustained amphibious and ground mechanized support to the assault elements of the 1st Marine Division as well as other combat support as directed during subsequent operations ashore. * Providing support to the

1st Combat Engineer Battalion 1st Combat Engineer Battalion is a combat engineer battalion of the United States Marine Corps. The unit, nicknamed "The Super Breed", is based at Marine Corps Base Camp Pendleton, California and falls under the command of the 1st Marine Divisi ...

and other 1st Marine Division units in the clearing of lanes through minefields and other obstacles during amphibious operations and in support of subsequent operations ashore. * Preparing combat ready units for deployment with designated Marine Expeditionary Units (MEU) and deployment to Okinawa as part of the Unit Deployment Program (UDP) in support of 3rd Marine Division

Subordinate units

The 3rd Assault Amphibian Battalion is currently composed of a Headquarters and Service Company, 3 companies located at

, and three retired companies, one of which being the reinforced company located at the

Marine Corps Air Ground Combat Center Twentynine Palms The Marine Corps Air Ground Combat Center (MCAGCC), also known as 29 Palms, is the largest United States Marine Corps base. It was a census-designated place (CDP) officially known as Twentynine Palms Base located adjacent to the city of Twentynin ...

History

World War II

3rd Assault Amphibian Battalion was originally activated 16 September 1942 at San Diego, California, as 3rd Amphibian Tractor (Amtrac) Battalion and assigned to the

3rd Marine Division The 3rd Marine Division is a division of the United States Marine Corps based at Camp Courtney, Marine Corps Base Camp Smedley D. Butler in Okinawa, Japan. It is one of three active duty infantry divisions in the Marine Corps and together with th ...

. During December 1942 the battalion relocated from San Diego a short distance up the coast to

. After training for a few months the battalion then deployed in February–March 1943 to

Auckland Auckland (pronounced ) ( mi, Tāmaki Makaurau) is a large metropolitan city in the North Island of New Zealand. The most populous urban area in the country and the fifth largest city in Oceania, Auckland has an urban population of about ...

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

in preparation for combat in the Pacific theater. During World War II, the battalion was primarily armed with Landing Vehicle Tracked (LVT), specifically the LVT-2 also known as "WATER BUFFALOS". LVTs on Guam

The battalion fought in the following combat actions: * Bougainville with 124 LVT-1s *

Guam Guam (; ch, Guåhan ) is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. It is the westernmost point and territory of the United States (reckoned from the geographic cent ...

with 193 LVT-2s and LVT-4s * Iwo Jima with 90 LVT-2s
LVTs on Iwo Jima

For its actions in World War II, 3rd Amphibian Tractor Battalion was awarded the Presidential Unit Citation Streamer, Asiatic-Pacific Campaign Medal Streamer With Four Bronze Stars, and the

World War II Victory Medal The World War II Victory Medal is a service medal of the United States military which was established by an Act of Congress on 6 July 1945 (Public Law 135, 79th Congress) and promulgated by Section V, War Department Bulletin 12, 1945. The Wo ...

Streamer. At the conclusion of World War II the battalion redeployed in March 1945 to Maui, territory of

Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only state ...

and then relocated during February 1946 back to Camp Pendleton, California. It was deactivated several months later on 1 May 1946.

1952 - 1966

3rd Amphibian Tractor Battalion was reactivated 1 April 1952 at Camp Pendleton, California, and assigned to

Fleet Marine Force The United States Fleet Marine Forces (FMF) are combined general- and special-purpose forces within the United States Department of the Navy that perform offensive amphibious or expeditionary warfare and defensive maritime employment. The Flee ...

, Pacific. It was subsequently reassigned during October 1955 to the

. Elements participated in the Cuban Missile Crisis, October–December 1962 During this period the battalion was still armed with LVTs - transitioning primarily to the

LVT-5 The LVTP-5 (landing vehicle, tracked, personnel 5) is a family of amphibious armored fighting vehicles used by the Philippine Marine Corps and, formerly, the United States Marine Corps. It was designed by the BorgWarner company and built by FMC ( ...

in the late 1950s.

Vietnam War and 1970s

3rd Amphibian Tractor Battalion deployed during February 1965 to

Camp Schwab Camp Schwab is a United States Marine Corps camp located in northeastern Okinawa Prefecture, Japan, that is currently home to the 4th Marine Regiment and other elements of the 28,000 American servicemen based on the island. The Camp was dedicate ...

Okinawa is a prefecture of Japan. Okinawa Prefecture is the southernmost and westernmost prefecture of Japan, has a population of 1,457,162 (as of 2 February 2020) and a geographic area of 2,281 km2 (880 sq mi). Naha is the capital and largest city ...

and redeployed again in June 1965 to the

Republic of Vietnam South Vietnam, officially the Republic of Vietnam ( vi, Việt Nam Cộng hòa), was a state in Southeast Asia that existed from 1955 to 1975, the period when the southern portion of Vietnam was a member of the Western Bloc during part of t ...

. There the battalion fought in the

Vietnam War The Vietnam War (also known by other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vietnam a ...

from June 1966 - January 1970. During this conflict the battalion distinguished itself at: *

Chu Lai Chu Lai is a seaport, urban and industrial area in Núi Thành District, Quảng Nam Province, Vietnam. The city is served by Chu Lai International Airport. It is also the site of the Chu Lai Open Economic Zone (Vietnamese: ''Với Khu Kinh T� ...

* Da Nang * An Hoa * Hoi An Throughout Vietnam the battalion was armed with variants of the

. For its actions in Vietnam, 3rd Amtrac Battalion was awarded the Presidential Unit Citation Streamer,

Navy Meritorious Unit Commendation The Meritorious Unit Commendation (MUC; pronounced ''muck'') is a mid-level unit award of the United States Armed Forces. The U.S. Army awards units the Army MUC for exceptionally meritorious conduct in performance of outstanding achievement or s ...

Streamer,

National Defense Service Medal The National Defense Service Medal (NDSM) is a service award of the United States Armed Forces established by President Dwight D. Eisenhower in 1953. It is awarded to every member of the US Armed Forces who has served during any one of four ...

Streamer,

Vietnam Service Medal The Vietnam Service Medal is a military award of the United States Armed Forces established on 8 July 1965 by order of President Lyndon B. Johnson. The medal is awarded to recognize service during the Vietnam War by all members of the U.S. Arm ...

Streamer With Two Silver Stars, Vietnam Gallantry Cross with Palm Streamer, and the

Vietnam Civil Actions Medal The Republic of Vietnam Civil Actions Medal ( vi, Dân-Vụ Bội-Tinh) also known as the Vietnam Civil Actions Medal or Civil Actions Medal, is a military decoration of the former South Vietnamese government (1955–75). The medal was creat ...

Unit Citation Streamer. The battalion relocated during February 1970 to Camp Pendleton, California, and was reassigned to the 5th Marine Expeditionary Brigade. It was again reassigned in August 1970 to the 5th Marine Amphibious Brigade. Subsequently, in April 1971 the battalion was reassigned to the 1st Marine Division with whom it remains to this day. In the early 1970s the battalion transitioned from the

to its replacement the

LVT-7 The Assault Amphibious Vehicle (AAV)—official designation AAVP-7A1 (formerly known as Landing Vehicle, Tracked, Personnel-7 abbr. LVTP-7)—is a fully tracked amphibious landing vehicle manufactured by U.S. Combat Systems (previously by Unit ...

. On 30 December 1976 the battalion was re-designated from 3rd Amphibian Tractor Battalion to 3rd Assault Amphibian Battalion (written as 3rd AABn). The battalion participated in numerous training exercises throughout the remainder of the 1970s.

1980s

Throughout the 1980s, 3rd Assault Amphibian Battalion deployed companies on its regular schedule of six month deployments to the forward units in

and

, including units aboard amphibious troop ships for fast-reaction forces in the

Pacific The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contine ...

and

Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by t ...

s and into the

Persian Gulf The Persian Gulf ( fa, خلیج فارس, translit=xalij-e fârs, lit=Gulf of Fars, ), sometimes called the ( ar, اَلْخَلِيْجُ ٱلْعَرَبِيُّ, Al-Khalīj al-ˁArabī), is a mediterranean sea in Western Asia. The bod ...

. It shared personnel and vehicles with the 1st Armored Assault Battalion as part of the Unit Deployment Program. In the early 1980s the battalion's LVT-7s underwent a Service Life Extension Program (SLEP), which converted the LVT-7 vehicles to the improved

-7A1 (AAV-7A1) by adding an improved engine, transmission, and weapons system and improving the overall maintainability of the vehicle. Upon realizing the need to mechanize units participating in the Combined Arms Exercises (CAX), two platoons of AAVs were transferred to the

(MCAGCC) in July 1979. Of the two platoons formed from Camp Pendleton, one went to Company A, 3d Tank Battalion, and the other platoon went to Company B, 3d Tank Battalion. The two platoons later merged and became Company D,

3rd Tank Battalion The 3rd Tank Battalion (3rd Tanks) was an armor battalion of the United States Marine Corps. It was formed during World War II and played a part in several Pacific island battles, most notably Iwo Jima, where its flame tanks played a key role i ...

in September 1980. Two additional platoons from 3d Assault Amphibian Battalion in Hawaii arrived on board the MCAGCC in December 1981. A redesignation ceremony was held on 18 January 1982 in which the colors of Company D, 3rd Tank Battalion were formally retired and replaced with the new colors of Company D (Rein), 3d Assault Amphibian Battalion. The company was instrumental in training Marines in desert warfare as they rotated in and out of the live-fire desert training area, a key to the Marine Corp's success in the 1991

Gulf War The Gulf War was a 1990–1991 armed campaign waged by a Coalition of the Gulf War, 35-country military coalition in response to the Iraqi invasion of Kuwait. Spearheaded by the United States, the coalition's efforts against Ba'athist Iraq, ...

. For its superior performance from 1983 to 1985, the battalion was awarded a

Desert Shield/Storm

In August 1990, 3rd AABn received orders to prepare for an overseas deployment to

Southwest Asia Western Asia, West Asia, or Southwest Asia, is the westernmost subregion of the larger geographical region of Asia, as defined by some academics, UN bodies and other institutions. It is almost entirely a part of the Middle East, and includes Ana ...

as a response to the

Iraqi invasion of Kuwait The Iraqi invasion of Kuwait was an operation conducted by Iraq on 2 August 1990, whereby it invaded the neighboring State of Kuwait, consequently resulting in a seven-month-long Iraqi military occupation of the country. The invasion and Ira ...

. In the following month the unit deployed to

Saudi Arabia Saudi Arabia, officially the Kingdom of Saudi Arabia (KSA), is a country in Western Asia. It covers the bulk of the Arabian Peninsula, and has a land area of about , making it the fifth-largest country in Asia, the second-largest in the A ...

and received shipments of its

s from

Maritime Prepositioning ship Strategic sealift ships are part of the United States Military Sealift Command's (MSC) prepositioning program. There are currently 17 ships in the program, strategically positioned around the world to support the Army, Navy, Air Force, Marine Corp ...

s to augment its current vehicle ranks. During this time the battalion began upgrading its AAVP-7A1s to carry the UGWS (UpGunned Weapons Station), which mounts a .50 cal (12.7 mm) M2HB machine gun and a Mk-19 40 mm grenade launcher. In preparation for the assault into Kuwait, the battalion divided into two main mechanized infantry task forces, along with 1st and

s, to form Task Force Ripper and Task Force Papa Bear respectively. The units trained and patrolled the Saudi frontier with Kuwait until the start of the ground war in February 1991. After five days of combat the two task forces, along with other Marine task forces, British and Pan-Arab units, captured

Kuwait International Airport Kuwait International Airport ( ar, مطار الكويت الدولي, ) is an international airport located in the Farwaniya Governorate, Kuwait, south of the centre of Kuwait City, spread over an area of . It serves as the primary hub for K ...

and a cease-fire was announced. During the march to Kuwait City, the mechanized infantry task forces were responsible for the defeat of numerous Iraqi regiments, the capture of tens of thousands of Iraqi prisoners, and the capture or destruction of thousands of enemy armored vehicles. 3rd AABn returned to

in March 1991. For its actions during the Gulf War, the battalion was awarded a Streamer. Navy Unit Commendation Streamer,

Streamer, and the Southwest Asia Service Medal Streamer With Two Bronze Stars. 3dAmtrac in Mogadishu

Restore Hope

On 9 December 1992, elements of 3rd AABn attached to the

15th MEU The 15th Marine Expeditionary Unit (15th MEU) is one of seven Marine expeditionary unit, such units currently in existence in the United States Marine Corps. The Marine Expeditionary Unit (MEU) is a Marine Air Ground Task Force (MAGTF) with a s ...

landed on the beach just outside the

Mogadishu Mogadishu (, also ; so, Muqdisho or ; ar, مقديشو ; it, Mogadiscio ), locally known as Xamar or Hamar, is the capital and most populous city of Somalia. The city has served as an important port connecting traders across the Indian Oc ...

International Airport in

Somalia Somalia, , Osmanya script: 𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖; ar, الصومال, aṣ-Ṣūmāl officially the Federal Republic of SomaliaThe ''Federal Republic of Somalia'' is the country's name per Article 1 of thProvisional Constituti ...

in support of

Operation Restore Hope The Unified Task Force (UNITAF) was a United States-led, United Nations-sanctioned multinational force which operated in Somalia from 5 December 1992 until 4 May 1993. A United States initiative (code-named Operation Restore Hope), U ...

. These initial forces were soon followed by Bravo, Delta, and H&S Companies of 3rd AABn. These units' operations stretched from Mogadishu to Bardera, Baidoa, and Kismayo. The battalion served as a blocking force for the International Airport's reception of airlifted humanitarian supplies, then extended its services as road guards for supply convoys and foot patrols in and around

. Elements of 3rd AABn served in Somalia or off the coast aboard MEUs from 1992 until approximately 1995. For its actions during Operation Restore Hope, the battalion was awarded the

Joint Meritorious Unit Award The Joint Meritorious Unit Award (JMUA) is a US military award that was established on June 4, 1981, by Secretary of Defense Caspar Weinberger and was implemented by Department of Defense Directive 1348.27 dated July 22, 1982. The Joint Meritor ...

Streamer and the

Armed Forces Expeditionary Medal The Armed Forces Expeditionary Medal (AFEM) is a military award of the United States Armed Forces, which was first created in 1961 by Executive Order of President John Kennedy. The medal is awarded to members of the U.S. Armed Forces who, after ...

Streamer.

Global War on Terror

In 2003, 3rd AABn participated in Operation Iraqi Freedom as part of the

. They first deployed in February 2003 to Kuwait and crossed the border into Iraq in March, attacking all the way to

Baghdad Baghdad (; ar, بَغْدَاد , ) is the capital of Iraq and the second-largest city in the Arab world after Cairo. It is located on the Tigris near the ruins of the ancient city of Babylon and the Sassanid Persian capital of Ctesiphon. I ...

. The battalion served as the primary mechanized assault support for the infantry and proved to be an invaluable asset in crossing the vast distances and urban areas of Iraq. Companies from 3rd AABn continue to deploy to Iraq on a regular basis in support of

Multi-National Forces West Multi-National Forces West (MNF-W) or United States Forces West (USF-W) was one of the coalition headquarters under Multi-National Force-Iraq. It was headquartered by either I or II U.S. Marine Expeditionary Force that rotated on a 12-month basis. ...

(MNF-W). In the Al Anbar province they conduct all manner of operations ranging from traditional infantry mechanized assault support to acting independently as motorized forces patrolling vast urban and desert areas. In 2010, the battalion was deployed to Helmand Province, Afghanistan. During that deployment the battalion suffered a casualty; Corporal Julio Vargas, who was killed by an IED on July 20. Marine Cpl. Julio Vargas Died July 20, 2010 Serving During Operation Enduring Freedom
/ref>

Awards

To date, the battalion's actions in support of the Global War on Terror have earned it a Presidential Unit Citation Streamer,

Streamer,

Global War on Terrorism Expeditionary Medal The Global War on Terrorism Expeditionary Medal (GWOT-EM) is a United States Armed Forces award created by George W. Bush on 12 March 2003, through Executive Order 13289. The medal recognizes those military service members who have deployed ove ...

Streamer, and the

Global War on Terrorism Service Medal The Global War on Terrorism Service Medal (GWOT-SM) is a military award of the United States Armed Forces which was created through Executive Order 13289 on 12 March 2003, by President George W. Bush. The medal recognizes those military service ...

Streamer.

Notable former members

* Justin LeHew - One of the most highly decorated US Servicemen serving in the war on terror. Recipient of the

Navy Cross The Navy Cross is the United States Navy and United States Marine Corps' second-highest military decoration awarded for sailors and marines who distinguish themselves for extraordinary heroism in combat with an armed enemy force. The medal is eq ...

for action during the Battle of Nasiriyah in 2003. Recipient of the Bronze Star Medal with combat "V" for actions during the battle of Najaf 2004.